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TUSB3210

8052 Cm

with USB Interface

and UART

8Kx8-byte

EEPROM

+3.3V

USB

+5V

Power-On Reset

SM USB DIG Platform

To Test Board

To Computer and Power Supplies

Power

Switching

Switched

Power

USB Bus

from

Computer

USB Power

+5.0V

+3.0V

(H-Z, 3.3V, or 5V)

DUT

Buffers and

Level Translators

I C/SPI

Control and

Measure Bits

+3.3V

Regulator

INA226EVM Hardware

www.ti.com

2.2.1 Theory of Operation for SM-USB-DIG Platform

Figure 4 shows the block diagram for the SM-USB-DIG Platform. This platform is a general-purpose data

acquisition system that is used on several different Texas Instruments evaluation modules. The details of

its operation are included in a separate document, SBOU098 (available for download at www.ti.com). The

block diagram shown in Figure 4 gives a brief overview of the platform. The primary control device on the

SM-USB-DIG Platform is the TUSB3210. The TUSB3210 is an 8052 microcontroller that has an onboard

USB interface. The microcontroller receives information from the host computer that it interprets into

power, I

C, SPI, and other digital I/O patterns. During the digital I/O transaction, the microcontroller reads

the response of any device connected to the I/O interface. The response from the device is sent back to

the PC where it is interpreted by the host computer.

Figure 4. SM-USB-DIG Platform Block Diagram

3 INA226EVM Hardware

Setting up the INA226EVM hardware involves connecting the two PCBs of the EVM together, applying

power, connecting the USB cable, and setting the jumpers. This section presents the details of this

procedure.

3.1 Electrostatic Discharge Warning

CAUTION

Many of the components on the INA226EVM are susceptible to damage by

electrostatic discharge (ESD). Customers are advised to observe proper ESD

handling precautions when unpacking and handling the EVM, including the use

of a grounded wrist strap at an approved ESD workstation.

INA226EVM Evaluation Board and Software Tutorial SBOU113– June 2011

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